James lewis



(No Model.)

J. LEWIS.

BURNER.

No. 397,653. Patented Feb. 12, 1889.

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JAMES LEWIS, OF BROOKLEY, COUNTY OF SURREY, ASSIGNOR TO GEORGE MA'JTTIIEY, JOHN SOUDABIORE SELLON, EDWARD MATTIlEY, AND RICHARD DAVIES MATTIIEY, ALL OF LONDON, IIGLAND.

BURNER.

SPECIFICATION forming part of Letters Patent No. 397,653, dated February 12, 1889.

Application filed September 10, 1884. Serial No. 1 12588. (No model.) Patented in France April 7, 1883, No. 154,787; in England February 26, 1884,110. 3,984, and in Germany May 15, 1884,1510. 21,188.

To (tZl whom it may concern:

Be it known that 1, JAMES LEWIs, a subject of the Queen of Great Britain, residing at 153 Brockley Road, Brockley, in the county of 5 Surrey, England, have invented certain new and useful Improvements in Gas-Burners for Consuming a Mixture of Gas and Air for Illuminating and HeatingPurposes, (for which I have received Letters Patent in Great Britro ain, No. 3,98%, dated February 26, 188i, and 011 May 9, 1884, have made application for addenda to Letters Patent in France, No. %,737, dated April 7, 1883; Germany, May 15, 1884:, P. A. 21,188,) of which the following 15 is a specification.

My present improvements in gas-burners for consuming amixture of gas and air relate to that class of gas-burners described in the specification of English Letters Patent dated January 8, 1883, No. 105, in which induced currents of air were introduced to the 'pipe or chamber below the platinum-wiregauze burner to mix with gas under pressure before reaching the burner.

2 5 According to my present improvements the induced currents of air are so arranged as to effect the combustion of the gas in the burner at its normal, or even below its normal, pres.

me from the supply-pipcs.

The invention consists in a novel combination of parts hereinafter described, and pointed out in the claims.

In the accompanying drawings, Figure 1 is a vertical section of a burner embodying my 3 5 invention, and Fig. 1* is a plan of the perforated base-plate thereof.

Similar letters of reference designate corresponding parts in both figures.

The base of the burner is composed of two plates, 6 e, supported on the inlet pipc b for gas, and formed with corresponding series of perforations, which may be partly or wholly opened or closed by turning one plate on the other. V An air-distributer consisting of a disk, c of wire-gauze or perforated meta-l, overlies the perforations in the plates 6 c. On the gas-pipe Z), above the plates c e, is placed an upwardly-tapering cone, (6 having a flange at its base, on which rests the chimney c, and the cone (0 may, indeed, be made in, one piece with the upper plate, 6. The cone a is surmounted by a tip, a, of platinum wire-gauze or analogous material which will become highly incandescent by heat, and in the example of my improvement shown between the cone and the tip is a piece, a, of non-conducting material, such as steatite.

d designates an outer short chimney or cylinder, larger than the chimney c, and resting on the base-plates c e, and through the annular space between the chimneysc and d air passes downward, as indicated by the arrows, and being heated in its passage it finally enters the openings around the gas-pipe b and in the base of the cone a which, it will be observed, are arranged between the chimney and said cone.

It will be observed that the gas-pipe Z) terminates in the lower part of the cone a and hence the air and gas entering the bottom of the cone a are there freely brought together, and ample opportunity is afforded as they rise together into the more contracted part of the cone for them freely and fully to mingle before they finally pass from the top of. the cone to the tip a, which is the point of combustion. Said cone therefore constitutes an air and gas chamber.

f designates a tube larger in diameter than the upper part of the chimney o, and over which it is placed so as to leave an annular space between them for the admission of air, as shown by arrows, to increase the draft, and by raising or lowering the tube f the draft of air to the burner may be regulated.

lVhat I claim as my invention, and desire to secure by Letters Patent, is

1. In an incandescent burner, the combination, with a gas-supply pipe, of an air and gas chamber having an imperforate wall of conical form, into which air and gas chamber said gas-supply pipe extends, passages for air beneath said air and gas chamber and communicating therewith, an imperforate portion constituting a passage for the mixed air and gas, 5 connected with and extending above said air and gas chamber, incandescing material arranged upon said imperforate portion, near the upper end thereof, a chimney inclosing said airand gas chamber, and a support for said chimney provided with perforations inward of the chimney, substantially as specified.

2. In an incandescent gas-burner, the combination, with a gas-supply pipe, of an air and gas chamber having an imperforate wall of conical form, into which air and gas chamber Said gas-supply pipe extends, passages for air beneath said air and gas chamber communicating therewith, an imperforate portion constituting a passage for the mixed air and gas, connected With and extending above said air and gas chamber, incandescing material arranged upon said portion, near the upper end thereof, a chimney inclosing the said air and gas chamber, and a second chimney of cylindrical form having an open upper end and inclosing the chimney first named, said secondnamed chimney being supported below the chimney first named in such manner as to form an air-passage downwardly through said second-named chimney and beneath the air and gas chamber, substantially as specified.

JAMES LEWIS.

Witnesses: 7

JOHN DEAN,

1'7 Gracechurch Street, London. JOHN G. TONGUE,

34 Southampton Buildings, London. 

